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- 2017 27" iMac, 10.5" iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Monterey
So if I'm using Mac, this security patch would not be installed into my modem? Does it really matter what is attached to the modem? I was under impression ISP would just shove new upgraded firmware into modem through their connection and that's that?
No, in the case you cited above, that should be an over the air firmware update to the modem since it involves a security vulnerability in the ISP's system. It just so happens that their customer supported gear is provided by Cisco. Security patches are provided by means of a firmware update which are applicable to the hardware. That means it doesn't matter whether you're on a Mac, PC, or Linux box, as the hardware interfaces only. You should be OK.
The support I was referring to above in my post would be concerning connection problems and trying to resolve them with your ISP. As stated, most ISPs are not trained in Mac support.